How is acting violent protesting against violence?

Question

With the protesters at the Republican National Convention smashing out windows and police cars out in a sign against the republican party basically over war and a tough economy (which of course they are the only ones to blame (anyways))

How is acting violent protesting against violence?

I just don't understand it

http://news.yahoo.com/nphotos/Republican-National-Convention-O27Fallon2C-Missouri-Republican-presidential-nominee-vice-presidential-candidate-Sarah-Palin/ss/events/pl/082708rncgoprepubcon/s:/ap/20080901/ap_on_el_pr/cvn_convention_rdp#photoViewer=/080901/480/6c3d4a1edbc7483b82f5b626c777b7ca

Answer 1

I love seeing the images of weeping radical leftists washing pepper spray from their eyes!

Answer 2

Bunch of mindless morons.